CS 10 Blade 4s motor

Need help. My new Change Sun 10 blade 70mm just arrived and I was hoping that somebody could advise me on what is the best 4s motor for this fan. This thread is long and there are so many motors mention making me confused. At my own disposal at he moment I have the Sapac MB1 and I wonder if this motor can be use also. My setup is only for 4s. Help help.

Need help. My new Change Sun 10 blade 70mm just arrived and I was hoping that somebody could advise me on what is the best 4s motor for this fan. This thread is long and there are so many motors mention making me confused. At my own disposal at he moment I have the Sapac MB1 and I wonder if this motor can be use also. My setup is only for 4s. Help help.

Need help. My new Change Sun 10 blade 70mm just arrived and I was hoping that somebody could advise me on what is the best 4s motor for this fan. This thread is long and there are so many motors mention making me confused. At my own disposal at he moment I have the Sapac MB1 and I wonder if this motor can be use also. My setup is only for 4s. Help help.

Oz

Ozzie, I can recommend the Turnigy L2855-2800kv. Works well and I get pretty good numbers on 4S. Mind you, I'm only flying a F-16 foamie.

erh7771, yes my ESC is the Turnigy Red Brick 125 Amps.
Burdo, what is the thrust kg on that Turnigy L2855?. What im looking for is low amps and speed, but if you ask which I'm most prefer than it would be speed. Is that motor is the best for this fan?.

erh7771, yes my ESC is the Turnigy Red Brick 125 Amps.
Burdo, what is the thrust kg on that Turnigy L2855?. What im looking for is low amps and speed, but if you ask which I'm most prefer than it would be speed. Is that motor is the best for this fan?.

There's no such thing as "best" in. More like "horses for courses".

Depends on what you want to do. What airframe are you planning to use?

The L2855-2800kv can give up to 1.4kg of thrust at 60-65ish amps.

I don't have any experience on the MB1 but it may well be the ticket for you.

I have the exact 3300mah 35c battery Anlucas. I will take your advise and test it out with the MB-1 and if you are right, it should be fast. Im going with just 4s to save weight and because I have so many of them 4s laying around. Wish me luck.

I have the exact 3300mah 35c battery Anlucas. I will take your advise and test it out with the MB-1 and if you are right, it should be fast. Im going with just 4s to save weight and because I have so many of them 4s laying around. Wish me luck.

Good luck! and report back your experiences...

I have a Sapac T-45 which wears this fan and with a 3300 25c I get 80-90mph. It's faster with higher C lipos.

So if it takes 1400watts to spin the rotor 35000rpm and your getting 35000 rpm using 1000 watts then something is wrong, either the rotor is slipping or the way your gathering rpm is not functioning properly. This brings me back to a question I asked in a previous post, how are you reading rpm?

Cheers,
Eric B.

Eric, in the T45 I am using an Eagletree for RPM, current, and GPS speed. The CS10 T45 has a Castle Phoenix 125 hence using Egletree. My other bench run CS10s are run with Castle ICE2 HV and I use that for RPM and all of the other measurements.

I have a bench Eagletree also that I have compared RPM and current to the ICE. The ICE reads higher on both current and RPM. Not a significant difference in RPM but current is about 10%+ higher on the ICE than Eagletree and my clamp on. Castle says it is because the ICE measures high frequency current better than the others. I have my doubts.

My calculation is for shaft power to turn the rotor under load at best efficiency.
If the rotor is slipping the motor will still show the rpms but will show lower wattage used to reach it. The Eagle Tree rpm sensor is tied into the motor wires note the shaft unless you used the magnets and external rpm sensor which you would have had to balance the rotor once the magnets were set into it to make it work which is a hassle. I have used the Eagle Tree in the past also and have had rotors that were slipping when I tested the WM400 5 years ago. The CC technology reads the rpms the same way as the Eagle Tree and it is completely internal.